public interface IR2FileService
 {
     Task<string> UploadFileAsync(IFormFile file, string folderName = "");
     Task<byte[]> RetrieveFileAsync(string fileKey);
     Task<bool> DeleteFileAsync(string fileKey);
     Task<string> RetriveList();
 }

 public class R2FileService : IR2FileService
 {
     private readonly IAmazonS3 _s3Client;
     private readonly string _bucketName;
     private readonly ILogger<R2FileService> _logger;

     public R2FileService(IConfiguration configuration, ILogger<R2FileService> logger)
     {
         _logger = logger;

         var accessKey = configuration["Cloudflare:R2:AccessKey"];
         var secretKey = configuration["Cloudflare:R2:SecretKey"];
         var accountId = configuration["Cloudflare:R2:AccountId"];
         _bucketName = configuration["Cloudflare:R2:BucketName"];

         var credentials = new BasicAWSCredentials(accessKey, secretKey);
         var config = new AmazonS3Config
         {
             ServiceURL = $"https://{accountId}.r2.cloudflarestorage.com",
             ForcePathStyle = true,
             SignatureVersion = "4"
         };

         _s3Client = new AmazonS3Client(credentials, config);
     }

     public async Task<string> UploadFileAsync(IFormFile file, string folderName = "")
     {
         try
         {
             // Generate a unique file name (you might want to implement your own naming strategy)
             var fileName = $"{Guid.NewGuid()}{Path.GetExtension(file.FileName)}";
             _logger.LogInformation(fileName);

             // Create the full path including folder if provided
             var fileKey = string.IsNullOrEmpty(folderName)
                 ? fileName
                 : $"{folderName.TrimEnd('/')}/{fileName}";

             using (var fileStream = file.OpenReadStream())
             {
                 var transferUtility = new TransferUtility(_s3Client);
                 var uploadRequest = new TransferUtilityUploadRequest
                 {
                     InputStream = fileStream,
                     BucketName = "testing",
                     Key = fileKey,
                     ContentType = file.ContentType,
                     //DisablePayloadSigning = true
                 };

                 await transferUtility.UploadAsync(uploadRequest);
             }

             _logger.LogInformation($"File {fileName} uploaded successfully to {fileKey}");

             return fileKey;
         }
         catch (Exception ex)
         {
             _logger.LogError($"Error uploading file: {ex.Message}");
             throw;
         }
     }